1396446931 has 4 divisors (see below), whose sum is σ = 1523396664. Its totient is φ = 1269497200.

The previous prime is 1396446901. The next prime is 1396446937.

1396446931 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1396446931 - 2²¹ = 1394349779 is a prime.

It is a super-2 number, since 2×1396446931² = 3900128062198637522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396446937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63474850 + ... + 63474871.

It is an arithmetic number, because the mean of its divisors is an integer number (380849166).

Almost surely, 2^1396446931 is an apocalyptic number.

1396446931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1396446931 is a deficient number, since it is larger than the sum of its proper divisors (126949733).

1396446931 is a wasteful number, since it uses less digits than its factorization.

1396446931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126949732.

The product of its digits is 419904, while the sum is 46.

The square root of 1396446931 is about 37369.0638229004. The cubic root of 1396446931 is about 1117.7417643936.

The spelling of 1396446931 in words is "one billion, three hundred ninety-six million, four hundred forty-six thousand, nine hundred thirty-one".